The proposed muti-mode imaging system will allow a combination of X-ray Backscatter imaging (proven successful in finding IEDs in AS&E's Z Backscatter Van) and other sensor modalities, such as vapor/trace detection and video, to be mounted on a robotic platform(the iRobot R-Gator) such that the system can be quickly moved into location to examine a potential threat, including WMD dispersal devices, while keeping the operator at a safe distance. R&D will involve imaging system size and weight reduction and integration with other sensors and the robot.